2143860400020 has 48 divisors (see below), whose sum is σ = 6263800824960. Its totient is φ = 546839753856.

The previous prime is 2143860399953. The next prime is 2143860400021. The reversal of 2143860400020 is 200040683412.

It is a super-2 number, since 2×2143860400020² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143860400021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 776759635 + ... + 776762394.

It is an arithmetic number, because the mean of its divisors is an integer number (130495850520).

Almost surely, 2^{2143860400020} is an apocalyptic number.

2143860400020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2143860400020 is an abundant number, since it is smaller than the sum of its proper divisors (4119940424940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2143860400020 is a wasteful number, since it uses less digits than its factorization.

2143860400020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553522064 (or 1553522062 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The spelling of 2143860400020 in words is "two trillion, one hundred forty-three billion, eight hundred sixty million, four hundred thousand, twenty".